Manometer



Dec. 12, 1933. G. P. LucKEY 1,939,559

MANOIETER Filed June 14, 1928 Patented Dec. l2, 1933 `fiw'ifrlaly'r ol-Flcl-i,

ivmNoMn'rimV Y v George?. Luckey, Lancaster, Pa. Appiicatin June 14, 192s.` seriemo. 285,389

f7 Claims. (ci. 'z3-no) This invention relates to a mechanical manometer, and has for its object to provide a device of the class in which the plane of the diaphragm is set at right-angles tov the plane v of the pointer, whereby adjustment for calibration can be quickly made, and in "which change in the zero indication can also be conveniently made.

With this and .other objects in view, the in-Y vention consists of the vnovel mechanism employed to accomplish the aforesaid objects, and in certain details of construction and combination of parts, all of which will be first fully described and afterwards specifically pointed out in the appended claims.

Referring to the accompanying drawing:

Figure 1 is a vertical section of a manometer constructed in accordance with this invention;

Figure 2 is a bottom plan view of the same;

Figure 3 is an elevation of the diaphgram and Vits rack and pinion;

Figure 4 is a front elevation with the dial removed and illustrating the diaphragm set oil? center; and

Figure 5 is an elevation of the parts shown in ,Figure 3, illustrating the diaphragm set angularly to its normal horizontal plane.

Figure 6 is a front elevational view of Fig. 1.

Like numerals of reference indicate the same parts throughout the several figures, in which:

l indicates the manometer frame formed of a strip of metal bent to form a back 2, top 3, bottom 4, an upper depending end 5, and a lower upstanding end 6; upon which ends 5 and 6 the dial 7 is mounted.

The manometer frame and the mechanism to be presently described is mounted in a suitable casing not shown.

In the back 2 of the strip 1 is located a coupling 8 to receive the bendable metal tube 9, which is connected to the source of pressure (not shown) by means of said coupling 8. The inner end of the tube 9 is bent downwardly at 10 and connected to the diaphragm capsule 1l.

Pivoted to the underside of said diaphragm icapsule 11 is a normally vertical rack 12, meshing with a pinion 13 fixed on the pointer shaft 14 carrying the pointer l5 ina plane at right angles to the diaphragm capsule 11, a small pulley 18 supported by the shaft 14 serving to .keep the rack 12 in contact with the pinion 13. Struck up from the bottom 4 of the frame 1, is an upright 16, which, together with the upstanding end 6, is provided with aligned openings 17 forming bearings for the pointer shaft 14 as shown in the drawing.

Having thusdescribed the several parts of the invention, itsY operation is as follows. The dial being calibrated, pressure through the tube 9 expands the 1 diaphragm capsule 11, and the downward movement of the same depresses the raclr- 12 and rotates the pinion 13 causing the pointer 15Y tomove over the dial 7. Y

In order to change or correct the calibration, the diaphragm. capsule may be rotated out of its normal horizontalplane, as for instance, as shown in Figure 5, orto a greater or less extent as conditions may require. By this expedient, the extent of movement of the pointer 15 is reduced for a given movement of the diaphragm capsule 1l.

In order to change the zero indication of the pointer 15, the upright 16 forming the inner bearing for the pointer shaft 14 may be bent away from the pinion 13, as shown in dotted lines in Figure 1, which bending lowers the pinion 13 with respect to the rack l2, and causes a corresponding change in the zero position of the pointer 15, while this same effect may be accomplished by moving the diaphragm 01T center as shown in Figure 4.

Having thus fully described the invention, I do not wish to be understood as limiting myself to the exact construction herein set forth, as I consider myself clearly entitled to all such changes and modifications as fall within the limit and scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is:

' l. A device ofthe character described comprising, a frame, a diaphragm capsule, a bendable tube for adjustably supporting vsaid diaphragm capsule and for leading pressure thereto, a rack flexibly connected to said diaphragm capsule, a pointer shaft, a pinion thereon meshing with said rack, a calibrated dial, and a pointer lying in a plane at right'angles to the normal plane of said diaphragm capsule and operatively connected to said shaft, said tube being adapted to be bent to turn said diaphragm capsule out of its normal plane to alter the extent of movement of said pointer caused by expansion of said capsule.

2. A device of the character described comprising, avdiaphragm capsule, a pressure tube connected thereto, a. rack pivotally connected to said diaphragm capsule, a pointer shaft, a pinion thereon meshing with said rack, a calibrated dial, a pointer secured to said shaft and disposed in the plane at right angles to the normal plane of said diaphragm capsule, and means for supporting said pointer shaft for adjustment so constructed and arranged that an adjustment thereof will effect a relative movement of said shaft along said rack and thereby impart a rotational movement of said pinion over said rack and change the zero indication of said pointer.

3. In a pressure responsive device, a pressure responsive element, a pointer, means operatively connecting said pressure responsive element and said pointer, and means for supporting said pressure responsive element for adjustment bodily and angularly, said means being so constructed and arranged such that adjustment thereof will materially alter the extent of movement of said pointer for a given expansion or contraction of said pressure responsive element.

4. In a pressure responsive device the combina-V tion with a pressure responsive diaphragm, a pointer movable over a dial to indicate the pressure and means operatively connecting said diaphragm and pointer for actuating the same, of means associated with said diaphragm for tilting the same bodilyv and angularly, said means being so constructed and arranged such that the tilting of said diaphragm will change its effective displacementof said connecting means and thereby materially alterv the extent ofv movement of said pointer;

5. In a pressure responsive device, in combination a pressure responsive element, a pointer, mechanism operatively connecting said pressure responsive element and said pointer for actuating the same, and means for supporting said pressure responsive element for adjustment bodily, laterally and angularly, said means being so constructed and arranged such that adjustment thereof will simultaneously vary the zero position of said pointer and materially alter its eiective range.

6. In combination, a pressure responsive element; a pointer, means interconnecting said pressure responsive element and said pointer, and means for supporting said pressure responsive element and adapted to be adjusted for tilting said pressure responsive element to vary its effective displacement of said pointer, said means comprising a conduit adapted to be connected to 

